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| 型号： | LC82161B-E |
| 元件分类： | 消费家电 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP208 |
| 封装： | SQFP-208 |
| 文件页数： | 8/19页 |
| 文件大小： | 225K |
| 代理商： | LC82161B-E |
LC82161B-E
No.7775-16/19
Interrupt Controller
This interrupt controller circuit supports 23 internal interrupts and 3 external interrupts.
Two interrupt vectors (FIQ/IRQ)
The interrupt is recognized using the status register. Interrupt priority is controlled in software.
Either rising edge detection, falling edge detection, or level detection can be selected for the external interrupts.
Interrupts can be enabled/disabled on a per-interrupt basis.
The FIQ or IRQ vector can be selected for each interrupt.
Noise filters are available to remove noise from interrupts 1 and 2.
Table 2 Interrupt Allocation
No.
Interrupt
Internal/external
1
External interrupt 1
External
2
External interrupt 2
External
3
External interrupt 3
External
4
DSP1
Internal
5
DSP2
Internal
6
DSP3
Internal
7
DSP4
Internal
8
DSP5
Internal
9
DSP6
Internal
10
DSP7
Internal
11
DSP8
Internal
12
Watchdog timer
Internal
13
Basic timer
Internal
14
DMA controller, channel 1
Internal
15
DMA controller, channel 2
Internal
16
SIO
Internal
17
USART1
Internal
18
USART2
Internal
19
GPIO
Internal
20
Protocol engine
Internal
21
Multifunction timer, channel 1: compare match A
Internal
22
Multifunction timer, channel 1: compare match B
Internal
23
Multifunction timer, channel 1: overflow
Internal
24
Multifunction timer, channel 2: compare match A
Internal
25
Multifunction timer, channel 2: compare match B
Internal
26
Multifunction timer, channel 2: overflow
Internal
DMA Controller
The LC82161B provides a 2-channel DMA controller.
Channel 1 is allocated to the protocol engine transmission port, and channel 2 is allocated to the protocol engine reception
port.
Memory to memory transfers
The transfer start operation can be performed either in software or by a DREQ start.
Transfer units: byte, half word, word
Provides single and block transfer modes
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